Tubular knitting machine



Ndv. 15,1938. R. H. CARHART 2,136,934

' TUBULAR KNITTING MACHINE Filed Jan. 24, 1938 3 Sheets-Sheet 1 IN VENTOR.

Nov. 15, 1938. R. H. CARI-[ART 2,136,934

TUBULAR KNITTING MACHINE Filed Jan. 24, 1938 5 Sheets-Sheet 2 Nov. 15, 1938. CARHART 2,136,934

TUBULAR KNITTING MACHINE Filed Jan. 24, 1938 3 Sheets-Sheet 3 ATTQRNEYS Patented Nov. 15, 1938 2,136,934 TUBULAR KNITTING acrame Raymond H. Carhart, East Syracuse, N. Y., as-

signor to W. 0. Line, Inc., Syracuse, N. Y., a

corporation of. New York Application January 24, 1938, Serial No. 186,592

'7 Claims. (01. Eli-79) This invention relates to tubular fabric knitting machines of the type referred to inmy Patent No. 2,091,467 issued August 31, 1937, and has for its object means for preventing the cloth from cloth wheel I are called outside knitting elements, which are mounted on suitable supports, not shown, on an outer stationary ring 8 forming a part of the frame or bed of the machine,

becoming entangled in the land-and-cast-off or and there are a plurality of sets of such mecha- 5 double burr or for relieving this b'urr from abnornism arranged side by side around the outside mal strains, that it would otherwise be subjected Ting The burr e s 5 are v t e referred to, due to roughness in the cloth, as knots, holes, to as the inside" burrs, they being located on and other similar conditions, and hence preventthe inner side of the needle ring and there is one mg upsetting, distorting or disarranging of the of such burr Wheels in each set of knitting mechburr wheel and damage to the cloth. anism.

The invention consists in the novel features This invention comprises means adjacent the and in the combinations and constructions hereinside burr wheel, that is, the land-and-cast ofl inafter set forth and claimed. burr for coacting with the knitted cloth to relieve In describing this invention, reference is had to the double burr of abnormal strains which would 15 the accompanying drawings, in which like charotherwise be transmitted thereto, due to roughacters designate corresponding parts in all the mess and imperfections in the cloth, as knots, etc., w which abnormal strains tend to distort, damage F1gure 1 is a fragmentary plan, partly in secor disarrange the double burr wheel 6. This tion, of a portion of a tubular knitting machine means comprises an -arcuate shield around the 20 showing the inside burr wheel with means for rear portion of the periphery of the'burr wheel, relieving it of strains of the cloth, the contiguous with respect to the direction of rotation of the parts or burr wheels of the knitting mechanism needle ring, it extending from a point near the and their relation to the needle ring being also needle ring around or part way around the burr shownwheel and being so located that the cloth is fended 25 Figure 2 is a sectional view on line 2-2, Figoff from the burr wheel at a point near the we 1. needle ring, and hence prevented from fellow- Figure 3 is an enlarged face view of the landing the burr wheel around, when the cloth beand-cast-ofi burr and its support. comes entangled in the burr wheehas when a Figure 4 is a sectional view on line 4-4, Fighole in the cloth catches on the blades of the burr 30 we wheel. It will be understood that the cloth is Figure 5 is a rear elevation on a reduced scale being pulled upwardly over a feed roll as it is of parts seen in Figure 3. knitted and is also rotating with the needle ring.

Figures 6 and 7 are views similar to Figures 3 Hence, if the portion of the cloth at the burr and 5 of another exemplification of the invention. wheel should become entangled i t blades of 35 A tubular fabric knitting machine of this class the hon whee t pull of the 010th will zomprises, generally, a suitable bed or frame, '3, against the shield and the strains borne by the rotating needle ring or cylinder, a rotating cloth shield and not by the burl Wheel and also the frame including mechanism. for winding upthe cloth can not follow around the burr wheel.

40 cloth, as it is knitted, knitting mechanism carried In F u es 1, 2, 3, nd 5, the s e d II is 40 by the bed and stationary with respect to the roshown as a cup enclosing the rear side, with tation of the needle ring, and suitable actuating respect to the direction of rotation of the needle mechanism .for t needle ring and for winding ring, and the periphery of the wheel 6, the shield the cloth. having a cut-out l2 at its margin adjacent the is As thisctype of machine is old and ,well known, needle ring or adjacent the needles of the rin in it is thought that description thereof is unnecmesh with or coacting with the burr wheel. The flry. burr wheel is nested in the shield or cup. The

l designates the rotating needle ring or sup shield is carried by a shank l3 by means of which port for the needles 2. The ring I is provided with the burr wheel is supported from a suitable brack- 5') suitable spokes 3 which are supported on a cenet on the bed of the machine, as shown in my pattral shaft, not shown. The ring I is in efiect a ent referred to. The shield or cup is formed turn-table supported by the frame or bed of the with an axial recess l4 in its bottom and a stud machine. The cloth is carried in the same man- I5 is arranged axially 0f the recess, and the bur! 1181- as in any knitting machine of t type an wheel is formed with a hub having an axial opentakes a generally tubular form, and the finished ing for receiving the stud. The shieldis normally cloth wound is in a roll by the usualmechanism. arranged at an inclined angle or plane with the The knitting mechanism includes a clearing open side of the shield or cup facing upward, so burr wheel 4, a sinker burr wheel 5, and a land, that the burr wheel is merely placed over the stud, castofi or double burr wheel 6, and a cloth presser and no provision is required for preventing it from or wheel I. The burr wheels 4 and 5 and the coming ofi the stud, especially as the movement of the needle ring normally tends to hold the burr wheel in the cup and on the stud. The burr wheel, as here shown, includes a body I6 having a hub I! having a bushing I8 therein, the bushing extending through the body 16. A retaining nut l 9 is threaded on the stud against the body is. In Figures 6 and 7, the shield ll instead of being a cup is located on the rear edge only of the burr wheel, with respect to the direction of rotation, and extends from a point near the needle ring and the cloth approximately a quarter way around the periphery or bladed edge of the burr wheel, and is supported by a radially extending arm ll from a hub l l which is formed with a recess and bearing stud 15 for the burr wheel.

The needle ring rotates in the direction of the arrow (Figure 1) and in case the cloth, due to holes in the cloth, knots or other abnormal conditions, becomes entangled or tends to become entangled in the burr wheel, the shield II or II prevents the cloth from following around the burr wheel and bending the blades or the teeth of the burr wheel, and also relieves the burr wheel of the pull of .the cloth, due to the cloth traveling with the rotating needle ring, and otherwise protects the burr wheel and relieves it of strains that r it would otherwise be subjected to under abnormal conditions tending to upset, damage or disarrange the burr wheel.

What I claim is:--

1. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation ofthe needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of means adjacent said burr wheel for coacting with the cloth to relieve the burr wheel of abnormal strains being transmitted from the cloth to the burr wheel due to roughness and imperfections in the cloth.

2. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation of the needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of a shield enclosing the rear side of the burr wheel with respect to the direction of rotation of the needle ring and having a cut-out portion on the margin thereof adjacent the needle ring.

3. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation of the needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of a shield enclosing the rear side of the burr wheel with respect to the direction of rotation of the needle ring and having a cut-out portion on the margin thereof adjacent the needle ring, the shield being in the general form of a cup in which the burr wheel is nested.

4. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation of the needle ring, each set including a burwheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of a support for the burr wheel including a shank by means of which it is attached to the bed of the machine and formed with a cup in which said burr wheel is rotatably mounted, the cup being located on the rear side of the burr wheel with respect to the direction of rotation of the needle ring and enclosing the rear side and periphery of the burr wheel and having a cut-out portion adjacent the needle ring, all whereby the cup serves as a shield to relieve the burr wheel of abnormal strains on the cloth due to roughness and imperfections in the cloth tending to distort and disarrange the burr wheel.

5. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respectto rotation of the needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of a support for the burr wheel including a shank by means of which it is attached to the bed of the machine and formed with a cup in which the burr wheel is rotatably mounted, the cup being located on the rear side of the burr wheel with respect to the direction of rotation of the needle ring and enclosing the rear side and periphery of the burr Wheel and having a cut-out portion adjacent the needle ring, all whereby the cup serves as a shield to relieve the burr wheel of abnormal strains on the cloth due to roughness and imperfections in the cloth tending to distort and disarrange the burr wheel, said cup having an axial bore in the bottom thereof, a stud coaxial with the bore, and the burr wheel having a hub extending into the bore and rotatably mounted on the stud.

6. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation of the needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of an arcuate shield enclosing the peripheral edge of the rear side of the burr wheel with respect to the direction of rotation of the needle ring, the shield extending from a point adjacent the needle ring rearwardly at least partly around the burr wheel.

7. In a tubular fabric knitting machine including a suitable bed, a rotating needle ring, and sets of knitting mechanism carried by the bed and stationary with respect to rotation of the needle ring, each set including a burr wheel located on the inner side of the needle ring with a portion of its periphery coacting with the needle ring and cloth adjacent the ring; of an arcuate shield enclosing the peripheral edge of the rear side of the burr wheel with respect to the direction of rotation of the needle ring, the shield extending from a point adjacent the needle ring rearwardly at least partly around the burr wheel, a support for the burr wheel having a recess in which the hub of the burr wheel is mounted, the hub having a radially extending arm, and the shield being carried by said arm.

RAYMOND H. CARHART. 

